JP3074281B2 - Flexible container - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a flexible container which is used for transportation of powder and granular materials and the like, and which enables smooth and quick removal of a transportation object, particularly, simultaneously or simultaneously. Different types of goods can be transported for each outbound and inbound trips.

(Prior Art) For example, conventional general methods of transporting powdery and granular materials include a method using a tank lorry and a method using a flexible container.

Here, in the transportation method using a tank lorry, the rigid tank attached to the bed of the car is brought to the receiving position and the taking-out position of the granular material with the traveling motion of the car, and at those respective positions, the inside of the tank is moved. In this method, the filling of the granular material into the tank and the discharging of the granular material in the tank are performed. According to this method, the discharging of the granular material in the tank is performed in addition to the shape retaining property of the tank. Since it can be performed by pneumatic feeding, there is an advantage that both the filling of the granular material into the tank and the discharge from the tank can be performed simply and quickly.

According to the method using a flexible container,
The container is used for trucks, wagons, ships, aircraft, etc.
In addition to the advantage of being able to be transported by any type of transportation means, there is an advantage in terms of transportation efficiency that the container can be folded compactly and returned after the transportation is completed.

(Problems to be Solved by the Invention) However, in the case of using a tank lorry, there is a problem that transportation efficiency is low due to the presence of a rigid tank, which necessitates running on the return path with an empty load.
In addition, when a flexible container is used, there is a problem in that loading and discharging work requires labor and loading efficiency is low.

Therefore, the development of a large flexible container that combines the advantages unique to tank trucks and the advantages unique to flexible containers is urgently needed, but in reality, it can satisfy both the discharge efficiency and the discharge work efficiency of transported goods. The situation cannot be increased as much.

The present invention advantageously solves the above-mentioned problems of the prior art, and can completely and swiftly discharge the transported goods sufficiently, and furthermore, simultaneously in one container, or in each of the outward and return trips. And a flexible container capable of transporting different types of goods.

(Means for Solving the Problems) The flexible container of the present invention has a reinforcing layer,
A flexible inner bag, also having a reinforcing layer, is hermetically attached to the inner surface of a flexible outer bag having an inflated shape of, for example, a boiler body shape, over the entire periphery thereof, and the flexible inner bag can be used. At the upper part of the flexible outer bag, at the position where it can be deformed and displaced between a position inscribed on one side of the flexible outer bag and a position inscribed on the other side of the outer bag, There are provided two filling ports and two venting ports, each of which is provided with a mounting portion of the flexible inner bag therebetween, and a lower end of the flexible outer bag is provided at each side end position opposing each other. Is provided with a pressurized gas inlet also serving as an outlet, more preferably,
In addition to the above, two woven fabrics located on the inner bottom of the flexible outer bag and separated by the attachment portion of the flexible inner bag therefrom, Each of the gas inlets is provided at a lower position, and the angle formed by the cord for reinforcing the flexible inner bag with the axis of the inner bag is substantially a static angle or slightly smaller.

Here, the term "stationary angle" means that the angle between the reinforcing cord of the flexible inner bag, which can make the swollen shape into a bottomed cylindrical shape, and the axis of the inner bag is 54 ゜ 44 '.

(Function) The flexible container according to the present invention can be compactly folded and stored on the return trip after the transport of the transported goods, and can be filled with a different space from the filling space used for the outward travel. Because they can be used as space, trucks, freight cars, ships, aircraft, etc. loaded with flexible containers can also be used effectively for freight transportation in the return trip process by any of them. Efficiency can be greatly improved.

In addition, here, the inflated shape of the flexible outer bag, in other words, the transported material filling shape is obtained by introducing a pressurized gas from one of the pressurized gas inlets serving also as an outlet, and then the transported product is transported. From at least one of the filling ports of the flexible outer bag, a package that can be made into a particulate material is released from the venting port while maintaining the filling shape, if necessary, by hanging means or other use. By filling below, the filling operation can be performed simply and quickly. After the flexible container is brought to the predetermined take-out position for the conveyed goods, both the discharge port and the pressurized gas inlet are released, and the pressure is applied from the port on the opposite side of the space for filling the conveyed goods. By introducing a gas, the flexible inner bag is gradually deformed and displaced toward the filling space side, and by pressing the goods based on the deformation, all of the goods in the filling space become flexible. With the inner bag, it can be discharged very simply and quickly.

Note that, here, when two different kinds of transported goods are filled and transported from the two filling ports of the flexible outer bag, after the transported goods in one of the filling spaces are discharged as described above, By deforming and displacing the flexible inner bag toward the other filling space, the goods in that space are also
It can be discharged simply, quickly and completely.

By the way, when the aeration means consisting of the woven cloth and the gas blowing port is provided on the inner bottom of the flexible outer bag, the gas in the filling space is discharged by the gas blown from the gas blowing port at the time of discharging the goods. By fluidizing the transported goods, it is possible to prevent the occurrence of the shelving phenomenon of the transported goods and to make the discharge thereof sufficiently smooth.

In addition, the angle between the cord that reinforces the flexible inner bag and the axis of the inner bag is made almost a static angle, and the change in diameter due to the action of the pressing force on the flexible inner bag is prevented. If the reversing displacement of the inner bag is facilitated, the work of discharging the transported goods can be performed more smoothly and promptly.
If the angle is made somewhat smaller than the rest angle, and a slight expansion deformation of the flexible inner bag is allowed, the contact force of the flexible inner bag with the inner surface of the flexible outer bag is increased, It is possible to more effectively prevent the transported product from remaining on the flexible outer bag.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a side view and a front view showing an embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a flexible outer bag shown in an inflated state.
Indicates a flexible inner bag which is hermetically attached to the inner surface of the flexible outer bag 1 over its entire circumference.

As shown in the figure, the flexible outer bag 1 having a substantially boiler trunk shape can be made of rubber, a synthetic resin material, or the like in which a reinforcing layer made of at least one piece of canvas or the like is embedded. In order to improve the shape retention of the outer bag 1 and to prevent the outer bag 1 from expanding and deforming when an internal pressure is applied thereto, the number of the reinforcing cords extending in the circumferential direction of the outer bag 1 is set to be orthogonal to them. It is preferable that the number of reinforcing cords is two times the number of reinforcing cords extending in the length direction. In addition, the planar shape of the flexible outer bag 1 when empty can be rectangular in order to facilitate the folding operation when empty.

The flexible inner bag 2 having an opening in an airtight manner at the center of the length direction of such a flexible outer bag 1 and having a swelling shape with a bottomed cylinder in the figure is indicated by a broken line in the figure. As shown in
The flexible outer bag 1 has a length that can be displaced between a position inscribed on one side of the flexible outer bag 1 and a position inscribed on the other side thereof, and a deformable flexibility. The airtight attachment of the flexible inner bag 2 to the flexible outer bag 1 is performed, for example, by folding the inner bag 2 near the opening as shown in a sectional view of FIG. The reinforcing sheet 3 having the curved portion 2a in contact with the inner peripheral surface of the outer bag 1 and having a substantially L-shaped cross section.
In a state of being brought into surface contact with the inner peripheral surface of the outer bag and the rising portion of the inner bag, respectively, by providing heat welding or vulcanization bonding therebetween, or as shown in FIG. 2 (b). In a state where the bag 1, the inner bag 2, and the reinforcing sheet 3 are sewn to each other, each of the protective sheets 4, 5, and 6 is bonded to each sewn portion by heat welding or vulcanizing. According to this, the mounting strength of the inner bag 2 to the outer bag 1 can be sufficiently increased.

In order to make the deformation displacement of the flexible inner bag 2 smooth and quick as described above, the extending direction of the reinforcing cord forming the reinforcing layer of the inner bag 2 with respect to the inner bag axis is It is preferable to set a substantially stationary angle, and in order to bring the inner bag 2 into intimate contact with the inner surface of the outer bag when the inner bag 2 is inverted, the extending direction of the reinforcing cord is set to be slightly smaller than the static angle. Then, it is preferable to allow a slight expansion deformation of the inner bag 2 when the pressurized gas acts on the inner bag 2. In the latter case, the length of the inner bag 2 is made slightly longer than the required length to compensate for the reduction in the length caused by the expansion deformation of the inner bag 2, thereby ensuring complete discharge of the transported goods. Preferred above.

Here, as shown in FIG. 3, the stationary angle refers to the inner bag axis X- of the reinforcing cord 2a embedded in the inner bag 2 in a spiral shape.
Means that the angle θ is 54 ° 44 ′, and when the angle θ is larger than the static angle, the supply of the internal pressure to the inner bag 2 causes the cord 2a to have a mechanically stable static angle. , And as a result, the inner bag 2 is reduced in diameter and expanded. On the other hand, if the angle θ is smaller than the resting angle, the inner bag 2 undergoes the diameter expansion deformation and the length reduction deformation.

Further, here, two filling ports 7a and 7b are respectively provided at positions on the top of the flexible outer bag 1 that are separated from each other with the inner bag attaching section therebetween, and each filling port is provided from the inner bag attaching section. At a position farther away than 7a, 7b, two vent holes 8a,
8b, the pressurized gas inlet 9 serving also as a discharge port is provided at the lower end of the outer bag 1 at a side end position facing each other.
a and 9b are provided respectively. According to this, while the one or both of the vent ports 8a, 8b are opened, the transported material is filled from the corresponding one or both of the filling ports 7a, 7b, so that one or Both of the filling spaces can be smoothly filled with the conveyed material, and after the flexible container is conveyed to the predetermined take-out position, both the discharge and pressurized gas introduction ports 9a and 9b are released. Then, pressurized gas is introduced from one of the ports 9a and 9b on the non-filled side of the package, or one of the spaces filled with the package together, to form a flexible inner bag. By displacing and displacing 2 to the opposite side of the inlet, the conveyed product can be easily and quickly extruded from the other port.

In the preferred example shown in the drawing, the flexible outer bag 1 is located on the inner bottom portion of the flexible outer bag 1 with the attachment portion of the flexible inner bag 2 therebetween.
For example, two woven fabrics 10a, 10b which can be a canvas
Is extended between the position in the vicinity of the inner bag attachment portion and the position in the vicinity of each discharge port and pressurized gas introduction port, and each of these woven fabrics 10a,
Gas inlets 11a and 11b are provided further below 10b. Here, the woven fabrics 10a and 10b prevent the transported material filled in the filling space from passing downward, while allowing the gas blown from the gas blowing ports 11a and 11b to pass upward. To work.

Here, the attachment of the woven fabrics 10a and 10b to the outer bag 1 is performed by sewing the woven fabric 10a to the outer bag 1 as illustrated in a cross-sectional view of one woven fabric 10a in FIG. Each of the protective sheets 12 to 15 can be thermally welded or vulcanized to the inner and outer peripheral surfaces of the sewn portion. The gas inlets 11a and 11b are formed by reinforcing a protective sheet 17 around the opening 16 formed in the outer bag 1, as shown in FIG. At the same time, a base 18 having a plurality of circumferential ridges is inserted into the opening, and the opening 16 is swaged with a base 18 and a caulking ring 19 by caulking a caulking ring 19 disposed therearound. The same applies to the other respective ports 7a, 7b, 8a, 8b, 9a, 9b described above.

Filling of the transportable material into the flexible container configured as described above, a plurality of belts 20 integrated therewith or separately formed, for example, a hook provided in the filling facility,
By hanging with an eye hook, the flexible container is supported by hanging at a predetermined position,
Therefore, for example, a gas, for example, air is blown into the outer bag through the woven fabric from one of the gas blowing ports to make the container inflated, and as shown in FIG. One side is inscribed and this swelling state, in other words the maintenance of the required filling port at a predetermined level, is connected to the filling equipment, for example, by other lifting means, not shown, connected to the top of the container. By doing
Thereafter, the air blowing from the gas blowing port is stopped, and one of the venting ports, the venting port 8a shown in FIG.
And the filling of the transported material into the container from the corresponding filling port 7a is sequentially performed.

Here, if the outer bag 1 has a sufficient shape retention under the action of the reinforcing layer of the outer bag 1, it goes without saying that the hanging means connected to the upper part of the container becomes unnecessary.

By the way, from two filling ports 7a and 7b provided in the outer bag 1,
When two types of transported materials are filled at the same time, the inflated state of the container is brought about by blowing air from both the gas blowing ports 11a and 11b, thereby setting the flexible inner bag 2 to a substantially neutral posture. Later, fill it with each vent
It is preferable to start under the opening of 8a, 8b.

After the filling is completed in this manner, the filling port is closed, the belt 20 and other hanging means are removed from the filling equipment, and the container is loaded on a truck, a ship or other transportation means, and the belt is used as necessary. The container is fixed by hanging 20 on a loading platform or the like.

After the container is transported to the destination, one of its outlets 9a is connected to the receiving facility, the outlet 9a is opened, and then, for example, air blowing from the gas blowing port 11a is started. And mobilizing the goods in the container to prevent the shelves of the goods from occurring,
The pressurized gas flows into the container from the other outlet 9b.

When the pressurized gas fills only one of the filling spaces with the transported material, the inner bag 2 is transferred to the inner bag 2 as shown in FIGS.
As shown in (c), it is deformed and displaced, so that the transported goods in the container shown by hatching in the figure are pushed out from the outlet 9a as the inner bag 2 is deformed and displaced,
The inner bag 2 is completely displaced as shown in FIG. 6 (c), and the discharge is completed in a state where the inner bag 2 is in contact with the side of the discharge port 9a.

Here, as described above, such deformation displacement of the inner bag 2 is performed particularly smoothly when the extension direction of the inner bag 2 is excluded by setting the extending direction of the cord for reinforcing the inner bag to a substantially stationary angle. Become. On the other hand, when the extension direction of the reinforcing cord is set to be slightly smaller than the rest angle, the inner bag 2 is brought into close contact with the inner surface of the outer bag based on the expansion deformation of the inner bag 2, and Also, it is possible to discharge the transported matter adhering to the inner surface of the first extremely effectively.

Thus, according to this flexible container, while the gas is blown into the outer bag from the gas inlet, the transported material is pushed out from the outlet 9a based on the deformation displacement of the inner bag 2 to tilt the container. , Without giving any vibration to the container, all of the goods in the container can be discharged simply and easily, and smoothly and quickly.

In carrying out the transportation as described above,
In relation to the dimensions of the outer bag 1 and the inner bag 2, the reinforcing structure of the inner bag 2, and the like, the inner bag 2 is transported to the vicinity of the mounting portion thereof as shown in the sectional view of FIG. If there is a possibility of containing the goods, another outlet 21 is provided in the outer bag 1 near the mounting base of the inner bag 2 and the outlet 21 is provided.
By discharging the contained packages from 21,
The discharge efficiency of the transported goods can be greatly improved.

The discharge of the above-mentioned transported goods is almost the same when two types of transported goods are simultaneously transported, and after discharging one of the transported goods as described above, the other transported goods are
By extruding based on the deformation displacement of the flexible inner bag 2 in the opposite direction, this can also be performed simply and completely.

After the completion of one shipment, the flexible container can be folded back compactly and returned, and if there is another type of cargo at that transportation point, a point near the transportation point, etc. , The flexible inner bag 2
In the state shown in FIG. 1 in the state of being inscribed on the opposite side, by filling the transported material from the filling port 7b,
It is possible to carry the transport in which mixing of different types of transport is completely prevented, and therefore, it is possible to greatly improve the transport efficiency particularly in the return trip.

Although the present invention has been described based on the illustrated examples, the shapes and dimensions of the flexible outer bag and the inner bag can be variously changed as long as the above-described effects can be obtained.

(Effects of the Invention) Thus, according to the present invention, it is possible to easily and quickly discharge the cargo in the container by deforming and displacing the flexible inner bag based on the introduction of the pressurized gas into the container. it can.

In addition, this container has two filling ports that are located with the inner bag attachment portion therebetween, so that two types of transported goods can be transported at the same time, and different types of transport are performed on the outward route and the return route. Objects can also be transported.

In addition, in the case where the aeration means including the woven fabric at the bottom of the outer bag and the gas inlet located further below the outer bag is provided, it is possible to prevent the transported goods from hanging on the shelves and to discharge the goods more smoothly. Also, by appropriately selecting the extending direction of the cord that reinforces the inner bag, it is possible to realize the ease of the inversion displacement of the inner bag, the effective scraping of the attached matter on the outer bag, and the like. it can.

[Brief description of the drawings]

1 is a schematic side view and a front view showing an embodiment of the present invention, FIG. 2 is a sectional view showing an example of attaching a flexible inner bag to a flexible outer bag, and FIG. FIG. 4 is an explanatory view showing an embedded state of an inner bag reinforcing cord, FIG. 4 is a view showing an example of attaching a woven fabric for aeration to a flexible outer bag, and FIG. 5 is a view showing an example of forming a gas inlet. FIG. 6 is a cross-sectional view illustrating a process of discharging the transported goods, and FIG. 7 is a cross-sectional view illustrating an example of forming another transported material discharge port. DESCRIPTION OF SYMBOLS 1 ... Flexible outer bag, 2 ... Flexible inner bag 7a, 7b ... Filling port, 8a, 8b ... Degassing port 9a, 9b ... Discharge port and pressurized gas inlet 10a, 10b ... Woven cloth, 11a, 11b: Gas inlet 21 ... Cargo outlet

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B65D 88/00-90/66

Claims (1)

(57) [Claims] 1. A flexible outer bag having a reinforcing layer, and a position which is hermetically attached to the inner surface of the flexible outer bag over the entire periphery thereof and inscribes one side of the flexible outer bag. And a flexible inner bag that can be deformed and displaced between a position inscribed on the other side, and an upper portion of the flexible outer bag, provided with a mounting portion of the flexible inner bag thereover. It is provided with two filling ports and two venting ports, and a pressurized gas inlet serving also as a discharge port, provided at the lower end of the outer bag at each side end position opposing each other. At the inner bottom of the flexible outer bag, two woven fabrics are placed, which are separated from each other by a mounting portion of the flexible inner bag, and each gas is blown further below these woven fabrics. The angle formed with the inner bag axis of the cord for providing the mouth and reinforcing the flexible inner bag should be substantially a static angle or slightly smaller. Flexible container.